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Optimization of Al2O3 and Li3BO3 Content as Sintering Additives of Li7-xLa2.95Ca0.05ZrTaO12 at Low Temperature

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タイトル: Optimization of Al2O3 and Li3BO3 Content as Sintering Additives of Li7-xLa2.95Ca0.05ZrTaO12 at Low Temperature
著者: Rosero-Navarro, Nataly Carolina 著作を一覧する
Miura, Akira 著作を一覧する
Higuchi, Mikio 著作を一覧する
Tadanaga, Kiyoharu 著作を一覧する
キーワード: Ca-Ta doped LLZ
sintering additives
Al2O3
Li3BO3
Li ion conductivity
発行日: 2017年 1月
出版者: Springer
誌名: Journal of electronic materials
巻: 46
号: 1
開始ページ: 497
終了ページ: 501
出版社 DOI: 10.1007/s11664-016-4924-4
抄録: Simultaneous effect of Al2O3 and Li3BO3 additions on sintering behavior and Li-ion conductivity of Li7-xLa2.95Ca0.05ZrTaO12 (LLCZT) garnet electrolyte sintered at 900 degrees C (10 h) is evaluated. The crystal phase and microstructure of the different composites were evaluated by x-ray diffraction and scanning electron microscopy (SEM), respectively. Electrical properties of the composites with high relative densities (95%) were examined by impedance spectroscopy. The cubic phase was formed for LLCZT sintered with 0-0.21 mol of Al2O3 and 0.70 mol-0.80 mol of Li3BO3. The excess of Al2O3 (0.22 mol) led to the formation of secondary phases. SEM observation revealed the good interconnection between LLCZT grains and the distribution of the glassy phase formed by Li3BO3 and Al2O3. Effective combination of 0.21 mol of Al2O3 and 0.80 mol of Li3BO3 produced denser material with high relative density of 95% and high Li-ion conduction of 1 x 10(-4) S/cm at 32 degrees C.
Rights: The final publication is available at Springer via http://dx.doi.org/10.1007/s11664-016-4924-4
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/68021
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: Nataly Carolina Rosero Navarro

 

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